A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m.

A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m. Correct Answer 8 ohm-metre

From the given circuit, R=V/I = 200/5 = 40ohm. Resistivity= Resistance*Area of cross section/ Length of the wire. Resistivity= 40*2/10= 8 ohm-metre.
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